Answer:
hope this helped, i just took a test on this
let's say is "x", so "x" is then 100% of the whole bill.
we know 15% is 22.05, what is "x"?

Answer:
A closed dot represents a lreater than or equal to or less than or equal to, which can be distinguished in an inequaity's equation by an underline.
Step-by-step explanation:
Answer:
(p-1)(b+9)
Step-by-step explanation: Both terms are a(b+9), but one term has a=p and the other is -1. So add them and get the answer
Answer:
(4, 0) and (5, 0)
Step-by-step explanation:
Given
See attachment for graph
Required
The x intercepts
This is the point where 
From the graph, we have the following as the x-intercepts:


Because the curve crosses the x-axis at the above points